Sig Sauer Logo
SIG SAUER P320 Safety Information
July 29, 2025
Click here to read more

Sig Sauer P320 M18 Carry 9mm Optic Ready Pistol

  • Item Number: 320CA-9-M18-MS
  • /
  • View More Items by Sig Sauer
  • /
  • Condition: NEW
Sig Sauer P320 M18 Carry 9mm Optic Ready Pistol
$649.99 $699.99

Temporarily Out of Stock

Includes FREE shipping

Manufacturer Rebate

Pistol Magazine Promo

Buy a Sig Sauer pistol and receive three free magazines after mail-in rebate.
Offer expires Nov 30, 2025

Shop all eligible items Rebate form/details
  • SMITH AND WESSON MP 2.0 9MM BLACK 5` OR NMS NS 17RD

    Smith & Wesson MP9 M2.0 9mm Optic Ready Full-Size Pistol with Suppressor Height Night Sights and Three Magazines
    $719.00 $474.97

  • SPRINGFIELD ECHELON 9MM PISTOL 4.5 IN BARREL OPTIC READY CRIMSON TRACE LIGHT 5 MAGS

    Springfield Echelon 9mm Pistol with Manual Safety, Viridian Green Dot, Crimson Trace Light, Five Mags and Range Bag
    $579.99

  • SIG SAUER P365 9MM OPTIC READY TACPAC W/ HOLSTER AND THREE 12-ROUND MAGAZINES

    Sig Sauer P365 9mm Optic Ready TacPac Pistol w/ Manual Safety, Holster and Three 12-Round
    $529.99

  • SMITH AND WESSON MP9 M2.0 COMPACT 9MM 4.07 IN BARREL BLACK OPTIC READY TS SAVIOR GREY BAG 5 MAG

    Smith & Wesson MP9 M2.0 Compact 9mm Optic Ready Pistol with Five Magazines and Savior Pistol Ca
    $669.00 $519.99

  • SPRINGFIELD XD MOD.3 OSP 9MM PISTOL

    Springfield XD Mod.3 OSP 9mm Optic Ready Pistol with 16 Round Magazine
    $325.00 $299.00

  • SPRINGFIELD HELLCAT OSP 9 MM 3 IN BARREL 3-11 RD AND 2-13 RD MAGS

    Springfield Hellcat OSP 9mm 9mm Gear Up Package with Five Magazines and Crimson Trace Red Dot
    $579.99

  • TAURUS G3C 9MM COMPACT PISTOL TWO 12 RD MAGS

    Taurus G3c 9mm Compact Striker-Fired Pistol
    $305.74 $234.99

  • STOEGER STR-9 COMPACT 9MM STRIKER-FIRED PISTOL

    Stoeger STR-9 Compact 9mm Striker-Fired Pistol
    $234.99

  • RUGER EC9S 9MM GRAY FRAME BLACK SLIDE 3.12 IN BBL

    Ruger EC9s 9mm Carry Conceal Pistol with Gray Frame
    $369.00 $219.99

  • CANIK TTI COMBAT 9MM 4.6` FLUTED/PORTED BARREL BURNT BRONZE CERAKOTE

    Canik TTI Combat 9mm Pistol with MaCanik M03 Competition Red Dot and Burnt Bronze Cerakote
    $949.99

  • GLOCK 19X MOS 9MM FDE 4.02 IN BARREL

    Glock 19X MOS 9mm Pistol with Coyote Frame and Slide
    $679.99

  • RUGER RXM 9MM 4 IN BARREL OPTIC READY DON WICK 2X15

    Ruger RXM 9mm Optic Ready 15+1 Don Wick Special Edition Donald Trump Pistol
    $499.99 $469.99

  • CCI 9mm 115 gr FMJ-RN Blazer Brass 50/Box

    CCI 9mm 115 gr FMJ-RN Blazer Brass 50/Box
    $24.99 $10.98
    ($0.22 / round)

  • CCI 9mm 124 gr FMJ Blazer Brass 50/Box

    CCI 9mm 124 gr FMJ Blazer Brass 50/Box
    $25.99 $10.99
    ($0.22 / round)

  • Maxx Tech 9mm Luger 115 gr FMJ Brass Case Target Ammo 50/Box

    Maxx Tech 9mm Luger 115 gr FMJ Brass Case Target Ammo 50/Box
    $16.95 $9.99
    ($0.20 / round)

  • Winchester 9mm Luger 147 gr FMJ-Encapsulated Super Suppressed Subsonic 50/Box

    Winchester 9mm Luger 147 gr FMJ-Encapsulated Super Suppressed Subsonic 50/Box
    $15.99
    ($0.32 / round)

  • Hornady 9mm 115 gr Critical Defense 25/Box

    Hornady 9mm 115 gr Critical Defense 25/Box
    $22.49
    ($0.90 / round)

  • CCI 9mm Luger 147 gr FMJ Blazer Brass 50/Box

    CCI 9mm Luger 147 gr FMJ Blazer Brass 50/Box
    $16.99 $12.99
    ($0.26 / round)

  • Federal 9mm 147 gr HST Jacketed Hollow Point Personal Defense 20/Box

    Federal 9mm 147 gr HST Jacketed Hollow Point Personal Defense 20/Box
    $37.99 $19.99
    ($1.00 / round)

  • Federal 9mm Luger 115 gr FMJ American Eagle  50/Box

    Federal 9mm Luger 115 gr FMJ American Eagle 50/Box
    $24.99 $11.99
    ($0.24 / round)

  • Remington 9mm 115 Gr FMJ Range 50/Box

    Remington 9mm 115 Gr FMJ Range 50/Box
    $23.99 $14.99
    ($0.30 / round)

  • Hornady 9mm Luger +P 124 gr XTP American Gunner 25/Box

    Hornady 9mm Luger +P 124 gr XTP American Gunner 25/Box
    $22.17 $17.99
    ($0.72 / round)

  • Hornady 9mm Luger+P 135 gr FlexLock Critical Duty 25/Box

    Hornady 9mm Luger+P 135 gr FlexLock Critical Duty 25/Box
    $26.99
    ($1.08 / round)

  • Winchester 9mm Luger 115 gr FMJ USA Target/Practice 50/Box

    Winchester 9mm Luger 115 gr FMJ USA Target/Practice 50/Box
    $11.99
    ($0.24 / round)

  • SIG SAUER P250/P320 9MM 17 RD MAG

    Sig Sauer P320 9mm 17 Round Factory Magazine
    $46.00 $36.99

  • SIG SAUER P320 M17 9MM 17 RD MAG (COYOTE)

    Sig Sauer P320 Full-Size/M17 9mm 17 Round Coyote Magazine
    $49.00 $35.99

  • SIG SAUER P320/P250 COMPACT 9MM 15 RD MAG

    Sig Sauer P320/P250 Compact 9mm 15 Round Factory Magazine
    $46.00 $35.99

  • ETS GROUP SIG SAUER P320 9MM 15 RD MAG

    Elite Tactical Systems Sig Sauer P320 9mm 15-round Magazine
    $21.99

  • SIG SAUER SIG SAUER P320 9MM 30 ROUND MAG

    Sig Sauer P320 9mm 30 Round Extended Factory Magazine
    $59.99 $43.49

  • SIG SAUER P320 COMPACT 9MM 10 RD MAG

    Sig Sauer P320 Compact 9mm 10-Round Factory Magazine
    $49.00 $35.99

  • SIG SAUER P320 9MM 30RND EXTENDED COY MAGAZINE

    Sig Sauer P320 9mm 30-Round Extended Factory Magazine - Coyote Brown
    $59.99 $42.99

  • MAGPUL AMAG 17 SG9 9MM 17RND MAG FOR SIG SAUER P320

    Magpul AMAG 17 SG9 9mm 17 Round Magazine for Sig Sauer P320/M17
    $34.95 $27.99

  • ETS GROUP CARBON SMOKE FITS SIG SAUER 320 17RD 9MM MAG EXTENDED

    Elite Tactical Systems Sig P320 9mm 17 Round Carbon Smoke Magazine
    $14.49 $9.99

  • SIG SAUER P320 FULL-SIZE 9MM 10-ROUND FACTORY MAGAZINE WITH COYOTE BASEPLATE

    Sig Sauer P320 Full-Size 9mm 10 Round Factory Magazine with Coyote Baseplate
    $49.99

  • ETS GROUP CARBON SMOKE FITS SIG SAUER 320 30RD 9MM MAG EXTENDED

    Elite Tactical Systems Sig P320 9mm 30 Round Carbon Smoke Magazine
    $14.99 $10.49

  • ETS GROUP OMEGA FITS SIG SAUER 320 17RND 9MM MAG

    Elite Tactical Systems Omega 17 Round 9mm Magazine for Sig Sauer P320 Pistols
    $25.99 $19.99

Related Videos

Product Description

What's in the Box

  • Sig Sauer P320 M18 Carry 9mm Optic Ready Pistol
  • (1) 17-Round Magazine
  • (2) 21 Round Magazines
  • Cable Lock
  • Owner's Manual

The P320-M18 brings the same unprecedented accuracy, extreme reliability and unmatched durability the military demands to you in a civilian version.

The Sig Sauer M18 is a 9mm, striker-fired pistol featuring a coyote-tan PVD coated stainless steel slide with black controls. The pistol is equipped with SIGLITE front night sights and removable night sight rear plate, and manual safety. These pistols also feature an ambidextrous manual safety, and are optics ready.

The P320 M18 Carry is only compatible with the SIG Romeo1PRO and Deltapoint PRO.

Firearm Features

  • Optic-Ready Coyote PVD Slide with Removable Night Sight Plate Compatible with Romeo1PRO and Deltapoint PRO Optics
  • Carry Length Coyote Grip Module
  • Ambidextrous Manual Safety
  • Striker Fired with a Short Tactile Reset
  • State Compliant Including Massachusetts
  • (1) 17rd & (2) 21rd Steel Magazines

Firearm Specifications

  • Manufacturer: Sig Sauer
  • Model: P320 M18 Carry
  • SKU#: 320CA-9-M18-MS
  • Caliber: 9mm
  • Barrel Length: 3.9"
  • Overall Length: 7.2"
  • Overall Width: 1.6"
  • Overall Height: 5.5"
  • Weight (with magazine): 28.1 oz.
  • Sight Radius: 5.8"
  • Magazine Capacity: 17 & 21 Rounds
  • Sights: SIGLITE Front / Night Sight Rear Plate
  • Frame: Polymer
  • Grip Module: Coyote Carry Medium
  • Slide Finish: Coyote PVD

Customer Comments & Questions

Customer Reviews

(4 out of 5) Sig Sauer M18 / Mags
by Howard from Arkansas City, KS on December 22, 2019

I think the Sig Sauer P320 M18 Carry 9mm Optics Ready Pistol, is a fantastic side arm. And I know this may sound petty, but I wish the M18 came with three 17 round magazines instead of the one 17 round and two 21 round magazines or three 21 round magazines. Just for the consistency for Duty carry.

(5 out of 5) M18 is awesome
by Derick from Boise, ID on April 7, 2020

I ordered this on the day it was available. I knew I wanted a P320 but was on the fence on which version to get. I love it, have three other grip modules and multiple mags its like having 4 pistols in one. dead on out of the box. No problems, highly recommend.

(5 out of 5) M18
by William from Marco Island, FL on August 15, 2020

Just an awesome weapon....